The numbers don’t lie: Jimmy Sains has stopped 10 of his 11 professional opponents. A 91% knockout rate puts him among the most statistically dominant finishers in British domestic boxing — hence the nickname “The Brentwood Beterbiev.” On Saturday at the Copper Box Arena, he steps up against Derrick “DelBoy The Punching Preacher” Osaze, a man with one of the most extraordinary stories in British boxing. Osaze has faced two men appearing on this very card — and he carries that experience into one of the biggest nights of his career.
| Detail | Info |
|---|---|
| Date | Saturday, March 21, 2026 |
| Venue | Copper Box Arena, Queen Elizabeth Olympic Park, London |
| Promotion | Matchroom Boxing |
| Division | Middleweight (160 lbs) |
| Scheduled Rounds | 10 |
| Broadcast | DAZN (worldwide) |
Jimmy Sains (England, 25) is the most explosive knockout artist on this card. Born December 8, 2000, in Harold Wood, Romford, East London, Sains trains under Tony Sims at the Matchroom Elite Gym in Essex — the same camp as British champion and Saturday’s headliner George Liddard. He turned professional in September 2023 and has not looked back.
His record: 11-0 with 10 knockouts. A 91% stoppage rate in 11 professional fights is a statement that goes beyond hype. The Boxing Data records tell a precise story: the only time Sains has been taken to a decision was his Southern Area Middleweight title fight against Gideon Onyenani — a deliberate, tactical outing where Sains chose to box rather than hunt the finish and demonstrated he can do both. Every other opponent has been stopped. He holds the English Middleweight title (won by TKO in round four against Troy Coleman, October 2025) and the Commonwealth Silver Middleweight belt. At 6’1” and fighting southpaw, he has a physical profile that makes him a genuine problem for conventional middleweights.
Derrick “DelBoy The Punching Preacher” Osaze (England, 32) brings perhaps the most remarkable backstory on the entire card. Born October 11, 1993 in Peckham — the same London neighbourhood as Only Fools and Horses’ Del Boy Trotter, hence the nickname — Osaze holds a BA (Hons) in Business Management and an MRes in Sport Psychology from Nottingham Trent University. He was ordained as a Youth Pastor at God’s Vineyard Church Nottingham in 2018, while simultaneously pursuing his professional boxing career.
His record stands at 13-3, and the 13 wins include one of the great single-night performances in British domestic boxing: winning the Ultimate Boxxer II middleweight tournament in 2019, defeating three prospects in a single evening with a combined record of 33-2 — including tournament favourite Kieron Conway. That performance earned him the first ever promotional contract offered by BOXXER and a golden robe from Shannon Briggs.
Osaze carries a unique connection to this fight card that no other competitor shares. In June 2021, he lost a ten-round decision to Tyler Denny — the man headlining Saturday night against Liddard. And in January 2025, he stepped up to face George Liddard at the O2 Indigo, losing by unanimous decision over ten rounds. He is the one man on this card who has shared a ring with both headliners. That experience costs nothing and brings everything.
| Jimmy Sains | Derrick Osaze | |
|---|---|---|
| Nationality | England | England |
| Age | 25 | 32 |
| Height | 6’1” / 185cm | — |
| Stance | Southpaw | Orthodox |
| Record | 11-0 | 13-3 |
| KOs | 10 (91%) | 3 (23%) |
| Pro Debut | 2023 | 2017 |
Sains is 7 years younger and carries a power differential that the statistics make impossible to ignore — 68 percentage points separating their KO rates. Osaze has six more years of professional experience and has spent time at the very top of British domestic middleweight boxing. The Boxing Data numbers frame this as the classic prospect-vs-gatekeeper dynamic: can the veteran’s experience and ring generalship neutralise the younger man’s extraordinary power?
| Date | Opponent | Result | Method | Rds |
|---|---|---|---|---|
| Oct 2025 | Troy Coleman | Win | TKO | 4 |
| Jan 2025 | Gideon Onyenani | Win | UD | 10 |
| Feb 2024 | Craig Morris | Win | KO | 1 |
| Date | Opponent | Result | Method | Rds |
|---|---|---|---|---|
| Jan 2025 | George Liddard | Loss | UD | 10 |
| Aug 2024 | Denzel Bentley | Loss | TKO | 2 |
| Mar 2024 | Joel Julio | Win | TKO | 3 |
| Jun 2021 | Tyler Denny | Loss | UD | 10 |
Osaze’s form table is a roadmap of the British middleweight division’s hardest hitters. Two of his three career losses came against men headlining this very card. The Bentley stoppage in August 2024 was against a WBO International title holder; the Liddard loss in January 2025 was his most recent outing — ten full rounds against the youngest British and Commonwealth champion in history. These are not losses to journeymen. Sains’ form tells a different story: three stoppages in three fights, with the single points win against Onyenani demonstrating the tactical range that will be needed over ten rounds on Saturday.
Sains hunts knockouts from the southpaw stance. He uses his 6’1” frame to create range, works behind a southpaw jab to set distance, and loads up the left cross — the same power shot that ended Coleman’s night in four rounds and has accounted for ten victims in eleven fights. He is not a reckless brawler; the Onyenani decision shows a calculating approach, varying rhythm and distance before committing to the decisive shot. The “Brentwood Beterbiev” nickname is a nod to the Artur Beterbiev school: disciplined relentlessness.
Osaze is a counterattacker. His Sport Psychology master’s degree is not incidental — he has spoken extensively about the mental side of the sport and uses tactical intelligence to compensate for the knockout power he doesn’t carry. Crucially, he has already survived ten rounds against this card’s main event fighter, just two months ago. He knows what a hard-punching, physically imposing unbeaten prospect looks like from the inside. That knowledge is his most valuable asset on Saturday night.
Jimmy Sains needs to:
Derrick Osaze needs to:
| Fighter | UK Odds | US Odds |
|---|---|---|
| Jimmy Sains | 1/8 | -770 |
| Derrick Osaze | 9/2 | +450 |
Sains is a substantial favourite at 1/8 — actually shorter odds than the main event favourite, which tells its own story about the power differential. Ten stoppages in eleven fights is not a fluke; this is a fighter built to hurt people. The question is not whether Sains wins, but whether Osaze’s championship-level experience can take him deep into the fight before the finish arrives.
Our pick: Jimmy Sains by TKO, rounds 5-7. Osaze’s experience will keep him competitive through the early rounds — he has been here before and knows how to survive opening pressure from dangerous hitters. But Sains’ southpaw power and physical advantages will be decisive in the second act. Expect a controlled, patient performance from “The Brentwood Beterbiev” before the finish comes in the middle rounds.
Sains vs Osaze is part of the Liddard vs Denny DAZN card on March 21.
| Region | Broadcaster | Approx. Ring Walk |
|---|---|---|
| United Kingdom | DAZN | ~8:00 PM GMT |
| United States | DAZN | ~3:00 PM ET |
Jimmy Sains is building one of the most statistically impressive records in British domestic boxing. Ten stoppages in eleven fights, English and Commonwealth Silver titles at just 25 years of age — the data demands attention. Derrick Osaze is the most experienced man he has faced, has a remarkable personal story that gives him a different kind of motivation, and has already survived ten rounds against this card’s main event fighter. Whatever happens on Saturday night, “The Punching Preacher” will not go quietly.
Don’t miss the rest of the card: Giorgio Visioli defends his English Lightweight title against Levi Giles — see the Visioli vs Giles preview, and the main event sees George Liddard put his British and Commonwealth Middleweight titles on the line against Tyler Denny in the Liddard vs Denny preview.
When is Sains vs Osaze? Jimmy Sains vs Derrick Osaze takes place on Saturday, March 21, 2026 at the Copper Box Arena, London, on the undercard of the Liddard vs Denny Matchroom card.
What channel is Sains vs Osaze on? The fight is broadcast live on DAZN worldwide.
Who is Jimmy Sains? Jimmy “The Brentwood Beterbiev” Sains is a 25-year-old English professional middleweight boxer from Harold Wood, Romford. He is 11-0 with 10 knockouts (91% KO rate), holds the English and Commonwealth Silver Middleweight titles, and trains under Tony Sims at the Matchroom Elite Gym in Essex alongside British champion George Liddard.
Who is Derrick Osaze? Derrick “DelBoy The Punching Preacher” Osaze is a 32-year-old English professional middleweight boxer from Peckham, London. He is 13-3, holds a master’s degree in Sport Psychology, is an ordained Youth Pastor, and won the Ultimate Boxxer II middleweight tournament in 2019.
What are the odds for Sains vs Osaze? Jimmy Sains is the heavy favourite at 1/8 (UK) / -770 (US). Derrick Osaze is 9/2 (UK) / +450 (US).
What’s the connection between Osaze and the rest of the card? Derrick Osaze has previously fought both men connected to the main event — he lost to Tyler Denny (the challenger) by UD in June 2021, and to George Liddard (the champion) by UD in January 2025. He is the only man on this card who has shared a ring with both headliners.
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